| 摘要 |
PURPOSE:To search the storing position of a relevant slave record in a short time by starting storage of slave records at and after the record that is stored previously by a step when new slave records and stored. CONSTITUTION:The slave records 2-5 belonging to a master record 1 are stored in a data base in accordance with the order of keys of the records 2-5. When a slave record 6 having key value 250 is stored, a data pointer 7 is first produced in a memory and the key value of the slave record stored previously by a step is recorded to the pointer 7. Then it is decided whether the record 6 belongs or not to the master record 1 to which the slave record stored previously by a step belongs. If so, the value of the pointer 7 is compared with the key value of the record 6. The storage of slave data is started at and after the one stored previously by a step based on the result of said comparison. Thus the storing position of the record 6 is searched.
|
